解決idea中"http://java.sun.com/jsp/jstl/cor"爆紅問題

1.https://blog.csdn.net/qq_37542292/article/details/81133997
2.主要導入這兩個包就可以了

<dependency>
            <groupId>javax.servlet.jsp.jstl</groupId>
            <artifactId>jstl-api</artifactId>
            <version>1.2</version>
        </dependency>
        <!-- https://mvnrepository.com/artifact/taglibs/standard -->
        <dependency>
            <groupId>taglibs</groupId>
            <artifactId>standard</artifactId>
            <version>1.1.2</version>
        </dependency>